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3 results for “refinery” in Mining
Mining · 22 May 2026
The Other Supply Chain: Artisanal Mining and the Mercury Problem
…l one. Remove any of the three and the chain breaks at that link. · Traceability from the refinery end · Downstream, the pressure is real. Refiners face due-diligence expectations, jewellery brands face consumer and regulatory scrutiny, and an accredited refiner risks accreditati…
Amara Okonjo · 15 min read
Mining · 5 August 2026
Grade, Cut-off and the Arithmetic of an Open Pit
…or conventional carbon-in-leach circuits 1–2 yrs Time from ore in the pit to metal at the refinery, including stockpiles · The energy-grade trade-off · The fundamental constraint on modern mining is not the availability of gold but the availability of energy. As average ore grade…
Amara Okonjo · 20 min read
Mining · 19 August 2026
Nine Grams a Tonne
What does it actually cost to pull an ounce of gold out of the ground? The honest answer runs through grade decline, energy and water bills, permitting delays and the closure liabilities nobody prices…
Amara Okonjo · 18 min read
